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Konkoly Extragalactic Workshop 2026

17 March 2026
Konkoly Observatory
Europe/Budapest timezone
Supported by the Lendület Programme of the Hungarian Academy of Sciences

András Kovács

Session

Talks

17 Mar 2026, 09:00
Detre Hall (Konkoly Observatory)

Detre Hall

Konkoly Observatory

Description

Scientific talks by participants

Presentation materials

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  1. 22. Intro & comments
    András Kovács (Konkoly Observatory)
    17/03/2026, 09:00

    A. Kovács, S. Frey, J. Vinkó

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  2. 7. Multimessenger Pathways to Extragalactic Neutrino Sources
    Emma Kun (HUN-REN Konkoly Observatory)
    17/03/2026, 09:30

    Neutrino astronomy with the IceCube detector probes the high-energy Universe through astrophysical neutrinos in the GeV–PeV energy range in a fundamentally different way than photon-based observations. Neutrino telescopes do not record images of the sky; instead, source associations are inferred statistically from reconstructed neutrino events. To date, only three neutrino sources have reached...

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  3. 4. The GALEX Extragalactic Spectral Database
    Gerard Williger (Konkoly Obs / U Louisville)
    17/03/2026, 09:45

    The GALaxy Evolution eXplorer (GALEX) satellite imaged the sky at
    ultraviolet wavelengths over 2003-13, making a well-cited catalogue.
    It also took wide-field spectra of 125,000 objects over 0.75% of the
    sky, which are under-exploited. 

     To make the spectra useful, we present results from a project to

    categorize and collect complementary multiband data for approximately
    11,000...

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  4. 6. Implications of the nanoHertz Gravitational-Wave Background for Galactic Feedback and Massive Black Hole Growth
    Dr Eniko Regos (Konkoly)
    17/03/2026, 10:00

    We investigate how pulsar timing array (PTA) measurements of the nanoHertz gravitational-wave background (GWB) can constrain models for the growth history of supermassive black holes (SMBHs) and how active galactic nucleus (AGN) and stellar feedback models can affect GWB predictions. Feedback regulates supermassive black hole (SMBH) growth, altering the black hole mass function (BHMF). Using...

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  5. 12. Little Red Dots - What's behind the name?
    Krisztina Perger (Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences)
    17/03/2026, 10:15

    A new population of high-redshift sources was discovered by the James Webb Space Telescope, referred to as little red dots (LRDs). These are a mysterious class of objects that appear to be extremely compact in size, show excess ultraviolet emission, have a red optical continuum in the rest-frame, and exhibit broad-line spectral features. Collecting a sample of 919 LRDs from the literature, we...

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